Number Bases Notes

Question 1

Binary, base…?

Answer 1

2

Question 2

Octal base..?

Answer 2

8

Question 3

Decimal base…?

Answer 3

10

Question 4

Hexadecimal base…?

Answer 4

16

Question 5

Time base…?

Answer 5

60 and 12

Question 6

Dozens base..?

Answer 6

12

Question 7

Feet and Inches (American) base…?

Answer 7

12

Question 8

Weeks Base…?

Answer 8

7

Question 9

Binary table…?

Answer 9

16, 8, 4, 2, 1, (DECIMALS) 0.5, 0.25, 0.125

Question 10

Name some companies that have adapted the unicode standard…?

Answer 10

including Adobe Systems, Apple, Google, IBM, Microsoft, Oracle Corporation, Sun Microsystems, and Yahoo!

Question 11

State two major advantages that Unicode has over earlier systems of coding characters…?

Answer 11

(Can’t find)

Question 12

What is the latest version of Unicode…?

Answer 12

Unicode 6.2.0

Question 13

How many characters are in the standard ASCII character set…?

Answer 13

127

Question 14

What is extended ASCII? how many additional characters are there…?

Answer 14

The term extended ASCII (or high ASCII) describes eight-bit or larger character encodings that include the standard seven-bit ASCII characters as well as others. The use of the term is sometimes criticized, because it can be mistakenly interpreted that the ASCII standard has been updated to include more than 128 characters or that the term unambiguously identifies a single encoding, both of which are untrue. (128)

Question 15

What computers use EBCDIC….?

Answer 15

used mainly on IBM mainframe and IBM midrange computer operating systems.

Question 16

Disadvantages of EBCDIC…?

Answer 16

EBCDIC only allows machines to process English and one other language and writes characters from left to right in every language, rather than from right to left as seen in Arabic languages.

is that the value they represent may not be exact, and so it is possible to get 24.999999 rather than 25. There are various standards for the numbers, but there are also many variations that are platform dependent.

Question 17

Advantages of EBCDIC…?

Answer 17

EBCDIC is advantageous because it consists of an 8-bit character language rather than the old 6-bit character language found on punch card encoding systems. This allows EBCDIC to provide IBM machines with support for a wide variety of functions that punch card encoding systems did not provide.

is that digits (0, 1, etc.) can be converted into numbers (0, 1, …) by masking off the upper four bits of their EBCDIC codes, without doing any table lookup or arithmetic. For example, the EBCDIC code for 3 is hexadecimal F3, binary 11110011, and the binary number 3 is 00000011.

Question 18

Finding One’s complement of binary…?

1011

Answer 18

Switch the Ones and Zero’s around.

so 1011=0100

Question 19

Finding Twos complement of binary…?

1011

Answer 19

Switch the Ones and Zero’s around and find the One’s complement.
so 1011=0100
Find Twos complement by adding 1 to the Ones complement.
1011=0101